[Eeglablist] The meaning of dB

[Antoine Shahin]

Hi;

I have a couple of questions concerning how the timef function calculates
the power.
1- the timef function measures the post-stimulus power with respect to a
pre-stimulus (baseline) power and this is calculated in decibels using
10*log10(Post-stimulius Power/Pre-stimulius Power). Is this correct?
2- I'm interested in knowing what the original values (in microvolts) are of
the pre-stimulus and post-stimulus data. Can the raw values for pre-stim and
post-stim amplitudes  be determined in EEGLAB?

your response is much appreciated

-- 
tony
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